/*/*
 * Copyright 2008 Max Kugland
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.splink.library.tween.sprop {
	/**
	 * Interface to enable tweening of any object property, even those who need special treatment like
	 * filters or color.  
	 * 
	 * @author Max Kugland
	 */
	public interface ISpecialProp {
		/**
		 * Gets invoked each time a <code>TweenAction</code> computes the tween progress. 
		 * 
		 * @param target the targte object whose property gets tweened
		 * @param prop the property of the target object which is tweened
		 * @param start the properties start value
		 * @param end the properties value when the tween completes
		 * @param value the properties current value
		 */
		function apply(target : Object, prop : String, start : Number, end : Number, value : Number, percent : Number) : void;
		/**
		 * Returns the value of the given property of the <code>ISpecialProp</code> target
		 * 
		 * @param prop the property whose value to return
		 * @return the value of the given property
		 */
		function getValue(prop : String) : Number;
	}
}
